A piece 5

A piece of cloth is laid at the center of a table 80 cm long and 60 cm wide, and it leaves 5 cm all around. Find the area which is not covered by the piece of cloth.

Correct answer:

A =  1500 cm2

Step-by-step explanation:

a=80 cm b=60 cm h=5 cm  x=a+2 h=80+2 5=90 cm y=b+2 h=60+2 5=70 cm  S1=a b=80 60=4800 cm2 S2=x y=90 70=6300 cm2  A=S2S1=63004800=1500 cm2



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